Posted: 2007.01.12(Fri)4:44 Post subject: Why does my air stone get a gel coating on it.

I have an air stone on the end of the tube connectedto my DIY CO2 container, and it is getting a strange gell coating aroung it. The last one last a few weeks before this happened so I changed it and the new one started the coat that day, now it has almost engulfed the stone. Is this bad for my tank, should I stop using it??_________________My tanks
http://www.aquahobby.com/board/viewtopic.php?t=55885